13781172662 has 12 divisors (see below), whose sum is σ = 21245559300. Its totient is φ = 6704352936.

The previous prime is 13781172661. The next prime is 13781172673. The reversal of 13781172662 is 26627118731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781172661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2513912 + ... + 2519387.

It is an arithmetic number, because the mean of its divisors is an integer number (1770463275).

Almost surely, 2^13781172662 is an apocalyptic number.

13781172662 is a deficient number, since it is larger than the sum of its proper divisors (7464386638).

13781172662 is an equidigital number, since it uses as much as digits as its factorization.

13781172662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033375 (or 5033338 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The spelling of 13781172662 in words is "thirteen billion, seven hundred eighty-one million, one hundred seventy-two thousand, six hundred sixty-two".